Joe Biden, Jay Leno

Jay Leno, on 'The Tonight Show with Jay Leno,' Oct. 15 "An article in the Washington Post today said that some medical experts believe Joe Biden may have had Botox. In fact, you know how they could tell? His expression didn't change when they asked him about his hair plugs.

Jay Leno, on 'The Tonight Show with Jay Leno,' Oct. 15 "An article in the Washington Post today said that some medical experts believe Joe Biden may have had Botox. In fact, you know how they could tell? His expression didn't change when they asked him about his hair plugs. (Reed Saxon / Associated Press)

Jay Leno, on 'The Tonight Show with Jay Leno,' Oct. 15 "An article in the Washington Post today said that some medical experts believe Joe Biden may have had Botox. In fact, you know how they could tell? His expression didn't change when they asked him about his hair plugs.